Pen top



FIG. 1 is a perspective view of a pen top showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is the opposite side from that shown in FIG. 4;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines are included to show portions of the pen top that form no part of the claimed design. 

CLAIM An ornamental design for a pen top, as shown and described. 